UFF File Reading and Writing

Reading and writing of ascii files in Universal File Format (UFF).

Description

UFF bundle contains 2 functions, one for reading (readuff) and one for writing (writeuff) of ascii and binary files in Universal File Format (UFF). Although there are many different data-sets that can be stored in UFF files in general, only data-sets 58, 58b, 15, 82, 2411, 2412, 151, 164, and 55 are supported (2411 and 2412 for reading only). These data-sets are frequently used in structural dynamics.

From February 2011 the code is hosted at

http://code.google.com/p/m-uff/

Acknowledgements

This file inspired Bruel & Kjaer Pulse Labshop Measurement Organizer Exporter.

• MATLAB release: MATLAB 7 (R14)

[Primoz Cermelj]

Fixed the issue Ozan pointed out, i.e., using numpt.

[Ozan Oguz]

There is a mistake in the extract58 data reading, which causes wrong plotting.

Instead of using "end-1" and "end" values to fill "measdata" and "x" values (((i.e. UFF.x = values(1:2:end-1);))), you should use "numpt" which is defined already as the number of measured data points.

This is neccessary in some uff recordings, as there are extra "zero" values at the end of the recorded data, which are not real measured data and used only to complete the columns and lines of UFF or UNV recording. Using "end" causes you to have these false data points.

See this:

*********************************
% Abscissa and ordinate values
if (ordDataType == 2 || ordDataType == 4)

% non-complex ordinate data
if spacingType == 0 % uneven abscissa
UFF.x = values(1:2:end-1);
UFF.measData = values(2:2:end);
else % even abscissa
UFF.measData = values;
nVal = length(UFF.measData);
UFF.x = UFF.xmin : UFF.dx : UFF.xmin + (nVal-1)*UFF.dx;
end
elseif (ordDataType == 5 || ordDataType == 6)

% complex ordinate data
if spacingType == 0 % uneven abscissa
UFF.measData = values(2:3:end-1) + j*values(3:3:end);
UFF.x = values(1:3:end-2);
else % even abscissa
UFF.measData = values(1:2:end-1) + j*values(2:2:end);
nVal = length(UFF.measData);
UFF.x = UFF.xmin : UFF.dx : UFF.xmin + (nVal-1)*UFF.dx;
end
else
errMessage = ['error reading measurement data at:' num2str(lineN)];
return
end

********************************

[Ozan Oguz]

Guys,

I am trying to read a UFF58 data. I can only plot the "data description" part, but couldn't manage to plot the measurment data.

Can you give a hint please? Is it possible at all?

Thank you!

[AlexG]

Great program, thanks.

it does not work to read a certain data type only with readuff.m . Please consider replacing:
if ~find(dsTypes==data_set_type)
by:
if dsTypes~=data_set_type

And moving:
dataSetN = dataSetN + 1;
just before:
UffDataSets{dataSetN} = ds_data;

Greatings

[ehs]

 

[oddo]

I have found an excel sheet for reading uff file here : www.noisestructure.com/products/Read_UFF.php

[Jake Zwart]

I had problems reading binary data into Ideas, so added single precision write capability and now it works.

[Tom Cunningham]

If I ever get to Europe, you pick the spot and I'll buy dinner! And if you ever get to Pittsburgh, I know where to eat and I'm still buying. Thanks again for a very useful program! It is the cornerstone of my vibration post-processing GUI.

[Ryan Edwards]

Thank you for this function. You also saved me a lot of work. As much as I would enjoy writing a function to read uff files, I just didn't have the time for this particular task I was working. Thanks again.

[Seshagiri Rao Maddipati]

Very cool. U saved me lot of work. Thank you so much. now i can transfer data from Onosokki to CADA-X through matlab

[Miguel Colomo]

I used it to read UFF data and create data from Matlab to CADA-X /LMS software. It was incredibly useful

[Ryan Dolan]

Wow... I am in your debt. You just saved me a ton of work.

[John Anderson]

I tried it on a .unv file output from LMS Virtual.Lab with results from a modal test (format 55). It works fine. This just saved me at least a day to write my own. Very cool!

[Helene Illaire]

Worked fine on Universal ascii 58 type of data (imported from Cada-X LMS).

[Thomas Cunningham]

Using ver. 0.9.9b2, I have read 58b data embedded in a proprietary file format that was actually a universal file with added data- this reader still managed to extract the data, so I'm not sure what your problem might be. I stand by my 5 stars for now, good luck!

[Yiu Luk]

I don't seem to be able to read Universal binary 58b type of data. The ASCII part seems OK.

[Thomas Cunningham]

Worked wonderfully on IOTech's Zonicbook 618 universal files. I embedded it in a calling function & graphed reams of spectra in minutes. Good work!

[scott reilly]

our instrument (polytec laser) kicked out a file that had invisible carriage returns in the windows environment. these had to be stripped out of the data file so that this m file could read the data.

[Frantz JOURDA]

Exactly what I was looking for. Tanks you Primoz, you're a star !

[Ray Martell]

Nice file.....one of the better ascii uff writers/readers i've seen.

[Matt Allen]

Great program. Thanks!